Improvement in umbrella-frames



E; GHARAGEAT. Umbrella-Frame.

No. 205,613. Patented Juiy 2,1878;

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UNITED STATES PATENT OFFICE.

EMILE CHARAGEAT, OF PARIS, FRANCE.

IMPROVEMENT IN UMBRELLA-FRAMES.

Specification forming part of Letters Patent No. 205,613, dated July 2,1878; application filed January 9, 1877.

To all whom it may concern:

Be it known that I, EMILE CHARAGEAT, of Paris, France, have inventedImprovements in Umbrellas, Parasols, and other Similar Articles, ofwhich the following is a specification:

By the improved frame which forms the object of my present invention Ipropose to give to umbrellas, parasols, and the like a firmness andstability far surpassing that hitherto secured.

While this improvement is applicable to all kinds of frames, it isparticularly designed for application to that for which Letters Patentwere granted to me, No. 190,551, May 8, 1877.

My invention consists in the employment of a supplementary series ofstretchers independent of the runner of the large stretchers, andserving, when the umbrella is open, to form a second frame or series ofstretchers, which greatly increases the resistance of the ribs to theaction of the wind and all other accidental causes. On account of theirshortness these small stretcher-ribs do not sensibly increase the weightof the umbrella, and, above all, I can easily reestablish its properweight by making the whole framing lighter. The addition of this secondset of stretchers has a further and very advantageous result in givingan upward pressure to the frame of large stretcher-ribs at the momentwhen the runner of these latter rises above or passes their horizontalposit-ion, at which said position the umbrella is fully open, and whichthus insures rigidity to the frame when open, which will then betterresist the force of the wind or other accidental shock; and,furthermore, the double series of stretcher-ribs give to the top of theumbrella a very regular curvature, and one incapable of being renderedunshapely, as are frames of the ordinary kind.

Figure 1 represents a portion of the complete umbrella-frame, and Fig. 2a detail view.

The rib a, jointed to the top nut b, is again fastened by another jointto the large stretcher rib c, which is itself jointed to the nut of therunner d. Independently of the larger stretcher-ribs c, I arrange asecond frame of smaller cross-ribs or stretchers, f, jointed to aspecial extra nut, g, and a projecting piece, h, provided for thepurpose on each rib a at about one-fourth of its length from the top nutb.

In Fig. 1, which represents the frame open, it will be seen that the topof the umbrella has a very regular curvature, which also results fromthe form given to the ribs of a slight arch continued throughout theirlength, and which also allows of the spring described in my formerpatent being dispensed with. The many advantages resulting from thisarrangement of the double stretchers will be readily understood withoutfurther reference.

For preventing the oil which I apply to the jointing of the ribs fromgreasing and staining the silk of the umbrella, I bind around the jointa sort of cover, 00, of india-rubber, as shown.

I claim The combination, in an umbrella provided with a runner andstretchers constructed and arranged to hold the ribs composing the framein an extended position without the employment of the usualspring-catches on the stick, of an auxiliary runner and a second set ofstretchers, substantially as and for the purpose described.

In testimony whereof I have signed my name to this specification beforetwo subscribing witnesses.

E. OHARAGEAT.

Nitnesses S. S. WARD, ALBERT CAHENS.

